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Tucson Water Supply & Delivery System

Municipal Water Quality and Your Health Public Health Seminar Series February 3, 2004 UA,Southwest Environmental Health Sciences Center Pima County Health Department City of Tucson Water Department. CRW. Water Treatment Plant. Reclaimed Water Production Facilities. CRW Recharge.

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Tucson Water Supply & Delivery System

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  1. Municipal Water Quality and Your HealthPublic Health Seminar SeriesFebruary 3, 2004UA,Southwest Environmental Health Sciences CenterPima County Health DepartmentCity of Tucson Water Department

  2. CRW . Water Treatment Plant Reclaimed Water Production Facilities CRW Recharge Recharge and Recovery Recharge and Recovery Tucson Water Supply & Delivery System Wastewater Treatment Plant Tucson Basin Wellfields Avra Valley Wellfield Groundwater Mtns. Avra Valley Aquifer Tucson Basin Aquifer

  3. Potable System Overview

  4. Safe Drinking Water? Clean Water Act Safe Drinking Water Act

  5. Clean Water Act Passed 1972 SURFACE WATER Quality Purpose: “fishable, swimmable” water DRINKING WATER Quality Indirect protection of quality

  6. Safe Drinking Water Act • Originally signed into law in 1974 • Authorizes EPA and states to set drinking water standards (regulations) • Protect drinking water supply from contamination • Limit contaminant levels in drinking water

  7. Coliform Bacteria (2)  Inorganic Chemicals(15)  Lead & Copper(2)  Radiochemicals (3) plus Uranium starting 2004  Synthetic Chemicals (30) Volatile Chemicals (21)  Disinfection By-Products Trihalomethanes (4) plus Haloacetic Acids (5) and Disinfectant Residuals starting 2004  Unregulated Contaminants (11) Ground WaterTest Requirements

  8. 2 “ACUTE” REST “CHRONIC” ACUTE Nitrate & Fecal Coliform Over 90 standards Chronic All the rest (calculated lifetime risk) How Fast Might These Contaminants Affect You?

  9. Protecting Public Health Sodium <0.0009 <0.0245 <10 Fluoride Sampled Analyzed Reported To meet regulatory requirements Tucson Water sampled, analyzed, and reported:  16,599 drinking water results in 2001 4200 drinking water results in 2002 and 2003  16,000 - 17,000 drinking water results in 2004 (anticipated)

  10. EPA & Tucson Water Sponsor EMPACT - Water Quality Information Program “Environmental Monitoring for Public Access and Community Tracking”

  11. What’s the Quality of Our Drinking Water? Community asks for information: Sodium  Hardness  Mineral content (TDS)  pH  Chlorine  Coliform Bacteria  Contamination

  12. Expanding the Program EMPACT also Reports on  Nitrate as nitrogen  Fluoride  Trihalomethanes  Temperature

  13. Pima County Health Department • Bacterias • Cryptosoridium reported cs 1-2 per year • Giardia reported cs 45 per year • Legionella reported cs 3 per year • Fecal coliforms

  14. Pima County Health Department • Immediate notification by media, posted signs • Diamond Bell, Mercury, and health departments role • http://www.epa.gov/safewater/mcl.html#mcls

  15. Near Real Time Water Quality Information

  16. What is Tucson's Water Quality? http://www.ci.tucson.az.us/cw/viewer.htm?Title=City%20Water

  17. What is My Water Quality?http://www.ci.tucson.az.us/mw/viewer.htm?Title=MyWater

  18. Live Example http://swehsc.pharmacy.arizona.edu/coep/water/index.html

  19. Contact Info • SWEHSC • Marti Lindsey, 626-4468,lindsey@pharmacy.arizona.edu • Pima County Health Department • Babs Johnson, 740-8315, babsj@pimahealth.org • Tucson Water • Fernando Molina, 791-5080 x1469 • Dan Quintanar, 791-5080 x1372

  20. Any Questions?

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